Which of the following patients should be referred to orthodontically close a maxillary midline diastema? 1. An 8 year old with no abnormal oral habits. 2. A 14 year old with no abnormal oral habits. 3. A 3 year old with a 4mm overjet. 4. An 8 year old with a previous thumb habit.
(2) and (4)
All of the above.
(1) and (3)
(1) (2) (3)
(4) only
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